A36 Ss400 Q235 Q345b Construction Ms Angle Steel Bar 100X100X5 Hot Rolled Iron Angle Size Slotted Profile Steel

Our construction-grade Mild Steel (MS) Angle Steel, available in globally recognized grades A36, Ss400, Q235, and Q345b, stands as a cornerstone in structural engineering-especially with its precision-manufactured 100X100X5 (leg length × leg length × thickness) dimension and hot rolled slotted profile. Designed to balance strength, adaptability, and ease of installation, this product caters to the rigorous demands of construction projects, delivering consistent performance that aligns with international quality standards.

Core Material Grades: Performance Tailored to Applications

Each grade of MS angle steel is engineered to meet specific mechanical requirements, ensuring compatibility with diverse construction scenarios:

A36: Compliant with ASTM A36 standards, this grade boasts a minimum yield strength of 250 MPa and tensile strength of 400–550 MPa. Its exceptional ductility (elongation ≥ 20%) and weldability make it a go-to choice for general structural applications, from building frames to bridge components, where reliability and cost-effectiveness are paramount.

Ss400: A Japanese Industrial Standard (JIS G3101) grade with a yield strength of ≥ 245 MPa and tensile strength of 400–510 MPa. Ss400 offers excellent formability and machinability, ideal for construction projects requiring frequent shaping or customization, such as prefabricated steel structures and architectural supports.

Q235: Aligned with China's GB/T 700 standard, Q235 features a minimum yield strength of 235 MPa and tensile strength of 375–500 MPa. Its balanced blend of strength and affordability makes it ubiquitous in residential, commercial, and light-industrial construction, including floor joists, handrails, and wall frames.

Q345b: A high-strength low-alloy (HSLA) grade under GB/T 1591, Q345b delivers enhanced performance with a minimum yield strength of 345 MPa and tensile strength of 470–630 MPa. The "b" suffix denotes its ability to withstand low temperatures (impact test at -20°C), making it suitable for heavy-duty construction in harsh climates, such as high-rise building cores, offshore platforms, and large-span bridges.

Precision Engineering: 100X100X5 Dimension & Hot Rolled Slotted Profile

The 100X100X5 dimension is a highly versatile 规格 (specification) for construction, offering optimal load-bearing capacity for mid-to-heavy structural components. The equal leg design (100mm × 100mm) ensures uniform stress distribution, while the 5mm thickness strikes a balance between weight and durability-critical for reducing structural load without compromising safety.

Manufactured via hot rolling (conducted at temperatures above 1,050°C), the angle steel exhibits a dense, uniform grain structure that enhances its mechanical strength and resistance to deformation. Unlike cold-rolled alternatives, hot rolled profiles offer superior ductility, allowing for on-site adjustments (e.g., bending, cutting) without cracking. The slotted profile is a key value-added feature: prefabricated slots along the leg length simplify installation by eliminating the need for on-site drilling, reducing labor time and ensuring precise alignment with other structural components (e.g., beams, columns, fasteners). These slots are engineered to maintain the material's structural integrity, with edge treatments that prevent stress concentration and corrosion.

Key Advantages for Construction Applications

Structural Reliability: The combination of high-strength grades and hot rolled grain structure ensures the angle steel can withstand static and dynamic loads, including wind, seismic activity, and heavy equipment weight.

Easy Installation: Slotted profiles enable quick, tool-free alignment and fastening, while the 100X100X5 dimension fits standard construction fixtures-streamlining project timelines.

Corrosion Resistance: When paired with protective treatments (e.g., hot-dip galvanization, epoxy coating), the mild steel surface resists rust and moisture, extending service life in outdoor or humid environments (e.g., coastal buildings, underground structures).

Cost-Efficiency: Mild steel's inherent affordability, combined with the slotted profile's labor-saving design, reduces overall project costs without sacrificing quality.

Compliance with Global Standards: All grades meet international norms (ASTM, JIS, GB/T), ensuring compatibility with global construction codes and facilitating cross-border projects.

Typical Construction Applications

This MS angle steel is indispensable across a range of construction scenarios:

Building Frames: Used as vertical supports and horizontal bracings in steel-framed residential, commercial, and industrial buildings, reinforcing structural stability.

Infrastructure Projects: Applied in bridge decks, highway guardrails, and railway sleepers, where high strength and weather resistance are critical.

Prefabricated Structures: Ideal for modular buildings, temporary construction sites, and portable facilities, thanks to its easy assembly and disassembly.

Architectural Features: Employed in stair stringers, handrails, and facade supports, balancing functionality with aesthetic appeal.

Heavy-Duty Installations: Used as bases for construction equipment, storage racks, and industrial machinery, providing a stable, load-bearing foundation.

Quality Assurance

Our A36/Ss400/Q235/Q345b MS angle steel undergoes rigorous quality control at every stage: raw material testing (chemical composition, mechanical properties), hot rolling process monitoring (temperature, pressure), dimensional inspection (100X100X5 accuracy, slot placement), and surface quality checks (no cracks, burrs, or defects). Each batch is accompanied by a certificate of compliance, ensuring traceability and adherence to project specifications.

For construction professionals seeking a reliable, versatile, and cost-effective structural solution, our 100X100X5 hot rolled slotted MS angle steel-available in A36, Ss400, Q235, and Q345b grades-delivers the performance and convenience needed to bring complex construction projects to life.